fix: limit SARIF rule tags to 10 for GitHub Code Scanning AB#2142

[emmanuelknafo]

Summary

GitHub Code Scanning warns that rules image-alt and select-name exceed the 10-tag limit in uploaded SARIF files. axe-core attaches many tags to rules (WCAG criteria, categories, best-practice markers), which can exceed GitHub's limit.

Changes

• sarif-generator.ts — add truncateTags(tags, limit) helper that prioritizes WCAG tags (/^wcag\d/) then takes the first 10
• Apply to properties.tags when building SARIF rules

All 28 existing SARIF tests pass.

Fixes AB#2142

[github-actions]

Coverage Report for Coverage

Status	Category	Percentage	Covered / Total
🔵	Lines	83.02% (🎯 80%)	724 / 872
🔵	Statements	82.42% (🎯 80%)	788 / 956
🔵	Functions	80% (🎯 80%)	132 / 165
🔵	Branches	70.01% (🎯 65%)	369 / 527

File Coverage

File	Stmts	Branches	Functions	Lines	Uncovered Lines
Changed Files
src/lib/report/sarif-generator.ts	88%	74.28%	87.5%	89.85%	88, 102, 135, 158, 179-181

Generated in workflow #139 for commit eb27b00 by the Vitest Coverage Report Action